Method of composing video signal, apparatus to compose video signal, display system, display apparatus and control method of display apparatus

Abstract

A method of composing a plurality of individual video signals, the method comprises creating a composed horizontal synchronous signal and a composed vertical synchronous signal to synchronize the plurality of individual video signals, and creating a composed video signal by synchronizing line data of the plurality of individual video signals with the composed horizontal synchronous signal and the composed vertical synchronous signal by a frame unit in a predetermined order. Thus, the method of composing a video signal, an apparatus to comprise a video signal, a display system, a display apparatus, and a control method of the display apparatus, composes a plurality of individual video signals into a composed video signal, to thereby transmit the composed video signal through a single cable.

1 . A method of composing a plurality of individual video signals, the method comprising: 
 creating a composed horizontal synchronous signal and a composed vertical synchronous signal to synchronize the plurality of individual video signals; and    creating a composed video signal by synchronizing line data of the plurality of individual video signals with the composed horizontal synchronous signal and the composed vertical synchronous signal by a frame unit in a predetermined order.    
     
     
         2 . The method according to  claim 1 , wherein the creating of the composed vertical synchronous signal comprises 
 detecting a frequency of an individual vertical synchronous signal of each of the plurality of individual video signals;    calculating a frequency of the composed vertical synchronous signal according to the detected frequency of the individual vertical synchronous signal of each of the plurality of individual video signals; and    creating the composed vertical synchronous signal having the calculated frequency.    
     
     
         3 . The method according to  claim 1 , wherein the creating of the composed video signal comprises: 
 alternately synchronizing the line data of the plurality of individual video signals with the composed horizontal synchronous signal; and    composing each frame of the plurality of individual video signals and synchronizing the composed video signal with the composed vertical synchronous signal.    
     
     
         4 . A display system comprising: 
 a video signal output apparatus to compose a plurality of individual video signals into a composed video signal, a composed horizontal synchronous signal and a composed vertical synchronous signal, and to output the composed video signal, the composed horizontal synchronous signal and the composed vertical synchronous signal;    a signal receiver to receive the composed video signal, the composed horizontal synchronous signal and the composed vertical synchronous signal from the video signal output apparatus;    a signal divider to divide the composed video signal received through the signal receiver into the plurality of individual video signals according to the composed horizontal synchronous signal and the composed vertical synchronous signal;    a synchronous signal generator to generate an individual horizontal synchronous signal and an individual vertical synchronous signal to synchronize each of the plurality of individual video signals according to the composed horizontal synchronous signal and the composed vertical synchronous signal received through the signal receiver;    a signal processor to process the plurality of individual video signals divided by the signal divider to have a format to be displayable on a display; and    a controller to control the signal processor to process at least one of the plurality of individual video signals output from the signal divider to be displayed on the display according to the individual horizontal synchronous signal and the individual vertical synchronous signal.    
     
     
         5 . The display system according to  claim 4 , wherein the signal processor comprises a PIP processor to perform a PIP function, and 
 the controller controls the PIP processor and the signal processor to display one of the plurality of individual video signals output from the signal divider as a main picture on the display, and another one of the plurality of individual video signals as a subsidiary picture on a portion of the display.    
     
     
         6 . The display system according to  claim 5 , wherein the signal processor further comprises: 
 a scaler having the PIP processor fabricated thereon; and    a signal converter to convert the plurality of individual video signals output from the signal divider to a format corresponding to the scaler.    
     
     
         7 . The display system according to  claim 4 , wherein the video signal output apparatus and the signal receiver are connected by a single cable.  
     
     
         8 . The display system according to  claim 4 , wherein the video signal output apparatus comprises: 
 a signal composing part to compose the plurality of individual video signals into the composed video signal, the composed horizontal synchronous signal, and the composed vertical synchronous signal; and    a signal output part to output the composed video signal, the composed horizontal synchronous signal, and the composed vertical synchronous signal.    
     
     
         9 . The display system according to  claim 4 , wherein the video signal output apparatus composes the plurality of individual video signals into the composed video signal, the composed horizontal synchronous signal, and the composed vertical synchronous signal by: 
 creating the composed horizontal synchronous signal and the composed vertical synchronous signal to synchronize the plurality of individual video signals; and    creating the composed video signal by synchronizing line data of the plurality of individual video signals with the composed horizontal synchronous signal and the composed vertical synchronous signal by a frame unit in a predetermined order.    
     
     
         10 . The display system according to  claim 9 , wherein the video signal output apparatus creates the composed vertical synchronous signal by: 
 detecting a frequency of an individual vertical synchronous signal of each of the plurality of individual video signals;    calculating a frequency of the composed vertical synchronous signal according to the detected frequency of the individual vertical synchronous signal of each of the plurality of individual video signals; and    creating the composed vertical synchronous signal having the calculated frequency.    
     
     
         11 . The display system according to  claim 9 , wherein the video signal output apparatus creates the composed video signal by: 
 alternately synchronizing the line data of the plurality of individual video signals with the composed horizontal synchronous signal; and    composing each frame of the plurality of individual video signals and synchronizing the composed video signal with the composed vertical synchronous signal.    
     
     
         12 . The display system according to  claim 4 , wherein the plurality of individual video signals comprises first and second individual video signals, and the composed video signal comprises first and second line data of the first and second individual video signals.  
     
     
         13 . The display system according to  claim 12 , wherein the line data of the first and second individual video signals are arranged alternatively in the composed video signal.  
     
     
         14 . An apparatus to compose a video signal, the apparatus comprising: 
 a signal composing part to compose a plurality of individual video signals into a composed video signal, a composed horizontal synchronous signal and a composed vertical synchronous signal; and    a signal output part to output the composed video signal, the composed horizontal synchronous signal and the composed vertical synchronous signal.    
     
     
         15 . The apparatus according to  claim 14 , wherein the signal composing part composes the plurality of individual video signals into the composed video signal, the composed horizontal synchronous signal and the composed vertical synchronous signal by: 
 creating a composed horizontal synchronous signal and a composed vertical synchronous signal to synchronize the plurality of individual video signals; and    creating a composed video signal by synchronizing line data of the plurality of individual video signals with the composed horizontal synchronous signal and the composed vertical synchronous signal by a frame unit in a predetermined order.    
     
     
         16 . The apparatus according to  claim 15 , wherein the signal composing part creates the composed vertical synchronous signal by: 
 detecting a frequency of an individual vertical synchronous signal of each of the plurality of individual video signals;    calculating a frequency of the composed vertical synchronous signal according to the detected frequency of the individual vertical synchronous signal of each of the plurality of individual video signals; and    creating the composed vertical synchronous signal having the calculated frequency.    
     
     
         17 . The apparatus according to  claim 15 , wherein the signal composing part creates the composed video signal by: 
 alternately synchronizing the line data of the plurality of individual video signals with the composed horizontal synchronous signal; and    composing each frame of the plurality of individual video signals and synchronizing the composed video signal with the composed vertical synchronous signal.    
     
     
         18 . A display apparatus having a display to display a picture thereon, the display apparatus comprising: 
 a signal receiver to receive a composed video signal, a composed horizontal synchronous signal and a composed vertical synchronous signal    a signal divider to divide the composed video signal received through the signal receiver into a plurality of individual video signals according to the composed horizontal synchronous signal and the composed vertical synchronous signal;    a synchronous signal generator to generate an individual horizontal synchronous signal and an individual vertical synchronous signal to synchronize each of the plurality of individual video signals according to the composed horizontal synchronous signal and the composed vertical synchronous signal received through the signal receiver;    a signal processor to process the plurality of individual video signals divided by the signal divider to have a format to be displayable on the display; and    a controller to control the signal processor to process at least one of the plurality of individual video signals output from the signal divider to be displayed on the display according to the individual horizontal synchronous signal and the individual vertical synchronous signal.    
     
     
         19 . The display apparatus according to  claim 18 , wherein the signal processor comprises a PIP processor to perform a PIP function, and 
 the controller controls the PIP processor and the signal processor to display one of the plurality of individual video signals output from the signal divider as a main picture on the display, and another one of the plurality of individual video signals as a subsidiary picture on a portion of the display.    
     
     
         20 . The display apparatus according to  claim 18 , wherein the composed video signal, the composed horizontal synchronous signal and the composed vertical synchronous signal are composed from a plurality of individual video signals by: 
 creating a composed horizontal synchronous signal and a composed vertical synchronous signal to synchronize the plurality of individual video signals; and    creating a composed video signal by synchronizing line data of the plurality of individual video signals with the composed horizontal synchronous signal and the composed vertical synchronous signal by a frame unit in a predetermined order.    
     
     
         21 . The display apparatus according to  claim 20 , wherein the composed vertical synchronous signal is created by: 
 detecting a frequency of an individual vertical synchronous signal of each of the plurality of individual video signals;    calculating a frequency of the composed vertical synchronous signal according to the detected frequency of the individual vertical synchronous signal of each of the plurality of individual video signals; and    creating the composed vertical synchronous signal having the calculated frequency.    
     
     
         22 . The display apparatus according to  claim 20 , wherein the composed video signal is created by: 
 alternately synchronizing the line data of the plurality of individual video signals with the composed horizontal synchronous signal; and    composing each frame of the plurality of individual video signals and synchronizing the composed video signal with the composed vertical synchronous signal.    
     
     
         23 . A method of displaying a picture on a display of a display apparatus, the method comprising: 
 receiving a composed video signal, a composed horizontal synchronous signal and a composed vertical synchronous signal;    dividing the composed video signal into a plurality of individual video signals according to the composed horizontal synchronous signal and the composed vertical synchronous signal;    generating an individual horizontal synchronous signal and an individual vertical synchronous signal to synchronize each of the plurality of individual video signals according to the composed horizontal synchronous signal and the composed vertical synchronous signal; and    displaying at least one of the plurality of individual video signals on the display according to the individual horizontal synchronous signal and the individual vertical synchronous signal.    
     
     
         24 . The method according to  claim 23 , wherein the displaying of the at least one of the plurality of individual video signals on the display comprises: 
 displaying one of the plurality of individual video signals as a main picture on the display; and    displaying another one of the plurality of individual video signals as a subsidiary picture on a portion of the display.    
     
     
         25 . The method according to  claim 23 , wherein the composed video signal, the composed horizontal synchronous signal and the composed vertical synchronous signal are composed from a plurality of individual video signals by: 
 creating a composed horizontal synchronous signal and a composed vertical synchronous signal to synchronize the plurality of individual video signals; and    creating a composed video signal by synchronizing line data of the plurality of individual video signals with the composed horizontal synchronous signal and the composed vertical synchronous signal by a frame unit in a predetermined order.    
     
     
         26 . The method according to  claim 25 , wherein the composed vertical synchronous signal is created by: 
 detecting a frequency of an individual vertical synchronous signal of each of the plurality of individual video signals;    calculating a frequency of the composed vertical synchronous signal according to the detected frequency of the individual vertical synchronous signal of each of the plurality of individual video signals; and    creating the composed vertical synchronous signal having the calculated frequency.    
     
     
         27 . The method according to  claim 25 , wherein the composed video signal is created by: 
 alternately synchronizing the line data of the plurality of individual video signals with the composed horizontal synchronous signal; and    composing each frame of the plurality of individual video signals and synchronizing the composed video signal with the composed vertical synchronous signal.